.umrechner {
    display: flex;
    justify-content: center;
    align-items: center;
}

.eingabefeld {
    display: flex;
    flex-direction: column;
    margin: 0 16px;
    border: 2px solid #dadada;
    max-width: 25%;

}

.umrechner input {
    border: none;
    border-bottom: 1px solid #0f0f0f;
    appearance: textfield;
}

.umrechner input::-webkit-inner-spin-button {
    appearance: none;
}

.umrechner input:focus {
    outline: none;
}

.umrechner input,
.umrechner label {
    padding: 0.5em;
    text-align: center;
}

.umrechner * {
    font-family: "Arial", "Helvetica", sans-serif;
    font-size: 1rem;
}

@media(max-width: 650px) {
    .umrechner {
        flex-direction: column;
    }

    .eingabefeld {
        max-width: 95%;
    }
}